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High frequency chest wall oscillation (HFCWO) is an airway clearance technique that loosens mucus by applying vibrations at different frequencies to the chest wall via a wearable vest. How does HFCWO work? HFCWO devices typically consist of an inflatable vest, connected by hoses to an external generator, that delivers percussion to the chest wall. Rapid and repeating pulses of positive air pressure gently oscillate (squeeze and release) the chest to facilitate mucus clearance.
SmartVestÂ® System. Discover the clear difference in HFCWO devices, for both in-home and inpatient therapy. Video: SmartVestÂ® Airway Clearance System. The SmartVest system delivers high frequency chest wall oscillation (HFCWO), a proven clinical therapy that helps clear the lungs of excess secretions. See how the SmartVest is innovatively designed for comfort, promotes therapy adherence, and makes deep, easy breaths possible.